Motor driven fan



Feb. 13, 1940. G. F. HARDIN 2,190,118

MOTOR DRIVEN FAN Filed Jan. 28, 1937 5 Sheets-Sheet 1 Feb. 13, 1940. a.F. HARDIN MOTOR DRIVENTAN Filed Jan. 28, 1957 5 Sheets-Sheet 2 I Feb.13,1940.

G. F. HARDIN MOTOR DRIVEN FAN Filed Jan. 28, 195';

3 Sheets-Sheet 3 QWUMM Patented Feb. 13, 1940 1 UNITED srlvrss smearoasis MOTOR DRIVEN FAN George F. Hardin, McKenzie, Tenn. ApplicationJanuary 28, 1937, Serial No. 122,871 3 Glaims. (Cl. 230--254) Thisinvention relates to alr conditioning apparatus, the primary object ofthe invention being to provide an electrically controlled -fan havingmeans whereby the fan may be adjusted 6 to cause the. fan to revolve,oscillate or remain stationary, to the end that the fan may be employedasa means for creating a circulation throughout-the entire area of theroom, or may direct a current of air. to a particular location withinthe room; at the Will of the operator.

An important object of the invention is the provision of means wherebythe blast of air caused by the fan, may be utilized in controlling themovements of the fan, thereby eliminating the necessity of usingmechanical means, such.

as motors or the like, for controlling the movements of the fan.

Another important object of the invention is to provide an electric fanconstructed in such a way that heated or cooled air may be drawn throughthe fan and directed into the room to be circulated-by the fan.

With the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and inthe details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the'finvention herein described, maybe made within thescope of what is claimed,

without departing from the spirit of the invention.

Referring to the drawings: Figure 1 is a side elevational view of a fanconstructed in accordance with the invention, the base and pedestal ofthe fan. being shown in vertical section.

Figure 2 is a front elevational View of the fan.

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 1.

employed for tilting the control blades.

Figure 9 is a modified form of fan construction, illustrating the fan aspositioned over hot 5 air or cold air ducts.

Figure 8 is a top plan view disclosing the mean Figure 10 is a plan viewdisclosing themeans for operating the control blades. 9

Figure 1.1 is a plan view of the control blade adjusting means.

Referring to the drawings in detail; the rei- 5 erence character 5designates a hollow base in which the tubular support 6 is mounted, thetubular support being connected to the head i,

.to which the motor casing 8 is adjustably connected, as at 9. Rollerhearings it are mounted 10. within the hollow base, and have connectionwith the tubular support '0 in such a way that free. rotary movement ofthe tubular support 6 within the hollow base 5, will be permitted.

As clearly shown by Figure 1 of the drawings, the tubular support 6extends an apprer ciable distance below. the lower roller bearing H],where it provides a support for the nuts 1 I, between which the springarms it are held. These spring arms l2 curvedownwardly and in 2'0wardly', and provide supports for the contact. members l3 which wipe thecollector rings 24 mounted in the'block it, that is constructed ofinsulating material. Wires It, which connect with a suitable source ofelectricity supply, p'ro- 25 vide means whereby electric current may besup"- plied to the collectorrings Hi, through the contact rings-l1, towhich the wires It are. connected. Thus it will be seen that due to.this .construction, a sliding contact is had betweenso the tubularsupport, and the base. Wires t8 connect with the contact members 13, andlead tothe fan motor, which is mounted within the motor casing 3. Thefan motor is of the usual and well known construction and includes thebladesZfl that are mounted on the motor shaft 21.:

The fan guard is indicated generally by the reference character 22' andis constructed preferably of wire arranged in such a way as to providebearings 23 that accommodatethe shafts 40. of the control blades 2 thatare disposed directly in front of the blades 29; of the fan. Rods 25have pivotal connection with the control blades so that the blades movein unison. Secured at the upper end of the shaft on which. the centralcontrol blade is mounted, is an actu-- ating member embodying spacedarms 25 and 21,

which arms are provided with threaded openings through which theadjusting screws 28 extend, the position of theadjusting screws beingsuch that the inner ends thereof will lie in the path of travel of'thecentral control blade .24 for purposes to be hereinafter more fullydescribed. Forming a part of the actuating device,.is an arm 29 thatextends rearwardly therefrom,the am:

29 being provided with a pin near its free end, over which one end ofthe coiled spring 30 is mounted, the opposite end of the coiled spring30 being connected to the central control blade 24, near one edgethereof, as shown by Figure 8 of the drawings. Thus it will be seen thatdue to this construction, the control blade at the center of the fanguard, will be held in a predetermined position, for a period of time topermit the blade to cause a rotary movement of the entire fan on itsbase. Pivotally connected to the central control blade 24, and disposedadjacent to the lower end thereof, is an arm 3 I, which.

arm is of a length to extend to a point where it shown by Figure 9 ofthe drawings.

may contact with the arms 32 mounted on the posts 33, as the fanrotates. These posts 33 are carried by the members 33 that arefrictionally held within the base of the fan, the posts extendingthrough slots in the base, so that the arms 32 may be adjusted withrespect to each other to regulate the movements of the fan. When thearms 32 have been moved to positions within the path of travel of thearm 3!, and the arm 3! contacts with the arms 32, it will be seen thatfurther rotary movement of the fan will cause the control blade to moveto a reverse position, with the result that the spring will snap pastdead center and move the blades to positions to direct air from the fanin the opposite direction, which will of course rotate the fan in theopposite direction returning the fan to its initial position.

As the fan rotates to a position to engage the arm 32 at the oppositeside of the fan base, the

control blades are moved in the opposite direction reversing themovement of the fan. It will of course be understood that when the arm3! has sult in the fan rotating continuously.

In the form of the invention as shown by sheet 3 of the drawings, adouble fan structure is provided, and includes the hollow base 34 inwhich the tubular support 35 is mounted, the tubular support being heldin roller bearings, as clearly The motor casing is indicated by thereference character 35', and completely surrounds the motor indicated at36, the fan casing 35 being in communication with the hot air pipe 31,and cold air pipe 38. The hot air pipe 31 is in communication with asource of hot air supply, so that hot air may be drawn into the fancasing 5 by the fans, and directed into the room for heating purposes.Should it be desired to cool the temperature of the room, the damper 39in the cold air pipe 38,

is moved to allow cold air to pass into the fan casing where it is blowninto the room.

Damper 40 controls the passage of hot air through the hot air pipe 31,into the fan casing.

In this form of the invention, the control blades are indicated by thereference character fill, the central control ,blade being so arrangedthat it may be moved to a position between lugs 4| of the bar 42, withthe result that the control blades may be moved to various positions ofadjustment, and at various angles with respect to the air blast from thefan. It will of course be understood that as the air from the fanstrikes the control blades, the casing together with both fans supportedby the casing, will be rotated continuously.

From the foregoing it will be seen that due to the construction shownand described, I have provided an electric fan which may be controlledto cause the fan to rotate continuously, oscillate, or remain stationaryat the will of the operator.

Having thus described the invention, what is claimed is:

1. An electric fan comprising a base, a motor supported on the base,pipes having enlarged upper portion merging into a discharge opening andproviding communication between the pipes, said base beingmounted'within the enlarged upper portions of the pipes, a housing incommunication with the pipes and completely encasing the motor, iansoperated by the motor and adapted to draw air through the pipes andhousing, and means for controlling the passage of air through the pipesand housing.

2. An electric fan comprising a base, a motor mounted on the base, anair inlet pipe, said base being mounted within the upper end of the airinlet pipe and spaced therefrom to allow air to pass upwardly to the fanthrough the air inlet pipe, and means for rotatably mounting the motoron the base.

3. An electric fan comprising a base, a motor supported on the base,pipes having enlarged upper end portions merging into a dischargeopening and providing communication between the pipes, said fan basebeing mounted within the enlarged upper portions of the pipes, a housingrotatably mounted at the upper ends of the pipes and communicating withthe pipes through said discharge opening, said motor being mountedwithin the housing and being completely encased in the the pipes andhousing.

GEORGE F. HARDIN.

